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DELETE STATEMENT:
The format of the delete statement is as shown below:
DELETE file-name RECORD [ ; INVALID KEY imperative-statement ]
Whenever the ACCESS MODE IS SEQUENTIAL the execution of the DELETE statement should be preceded by the execution of a READ statement on the file and the INVALID KEY phrase must not be specified.
Concept of a two-dimensional table: Concept of a two-dimensional table can be easily extended to tables having three or more dimensions. The Handling of tables up to three dim
Rules for Simple sort verb: The work file is to be defined by a sort elaboration entry (SD entry).The format of SD entry is as shown below. The rules below should be taken
program
Illustration of Subtract verb: (a) SUBTRACT A FROM B. This illustration means that the value of A will be subtracted from the value of B and the subtracted result will be s
Common form of the READ statements: Format 1 is the common form of the READ statements. Format 2 is used when the access mode is either random or dynamic. For illustration,
Second form of Divide verb: The second form of this verb is as shown below: In this situation the identifier-1 or numeric- literal-1 will be divided by identifier-2 or
PROCEDURE DIVISION statements for the indexed files: All the statements which are available for a relative file are also available for an indexed file. READ STTATEMENT :
FILE-CONTROL paragraph for the indexed files: The common format for the SELECT clause for a file is as shown below: SELECT file-name ASSIGN TO implementor -name
NONSTANDARD CLAUSES: The various clauses explained above are as per the ANSI standard. Also, most compilers provide for additional nonstandard clauses to meet the specific nec
PROGRAM FOR IF : We have to write a program to check whether the given number is ODD or EVEN. Identification division. Program- id. Ifst. Environment division.
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